Statistics – Computation
Scientific paper
Oct 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996sri..repts....s&link_type=abstract
Technical Report, Southwest Research Inst. San Antonio, TX United States
Statistics
Computation
Solar Wind, Interstellar Matter, Two Dimensional Models, Magnetohydrodynamics, Plasma Interactions, Astronomical Models, Spherical Coordinates, Cylindrical Coordinates, Hydrodynamic Equations, Gas Dynamics, Flow Distribution, Heliosphere, Radio Emission, Shock Waves, Interstellar Magnetic Fields, Mathematical Models
Scientific paper
The overall objective of this research program is to obtain a better understanding of the interaction between the solar wind and the interstellar medium through the use of numerical solutions of the time-dependent magnetohydrodynamic (MHD) equations. The simulated results have been compared with observations where possible and with the results from previous analytic and numerical studies. The primary accomplishment of this project has been the development of codes for 2-D models in both spherical and cylindrical coordinates and the application of the codes to the solar wind/interstellar medium interaction. Computations have been carried out for both a relatively simple gas-dynamic interaction and a flow-aligned interstellar magnetic field. The results have been shown to compare favorably with models that use more approximations and to modify and extend the previous results as would be expected. The simulations have also been used along with a data analysis study to provide a quantitative estimate of the distance to the termination and bow shocks. Some of the specific topics that have been studied are: (1) gas dynamic models of the solar wind/interstellar medium interaction, (2) termination shock response to large-scale solar wind fluctuations, and (3) distances to the termination shock and heliopause. The main results from each of these studies are summarized. The results were published in three papers which are included as attachments.
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